#!/bin/bash
#
# Add the `@executable_path/../Frameworks` rpath to one or more Mach-O
# binaries, skipping any binary that already carries it.
#
# `install_name_tool -add_rpath` treats an existing LC_RPATH for the same path
# as an error, and cargo-bundle 0.11.0 adds this rpath itself whenever it
# copies at least one framework into the bundle. Bins that declare
# `osx_frameworks` (`dev`, `stable`, `preview`) therefore arrive with the rpath
# already set, while bins that declare none (`warp`, `warp-oss`) still need us
# to add it, so the add has to be conditional rather than dropped.

set -euo pipefail

FRAMEWORKS_RPATH="@executable_path/../Frameworks"

if [[ $# -lt 1 ]]; then
  echo "Usage: $0 <binary-path>..." >&2
  exit 1
fi

for binary_path in "$@"; do
  if [[ ! -f "$binary_path" ]]; then
    echo "No binary to add an rpath to at $binary_path" >&2
    exit 1
  fi

  # `path` is the LC_RPATH payload field; other load commands (LC_LOAD_DYLIB
  # and friends) name their payload differently, so track the enclosing command
  # rather than matching the field name alone.
  existing_rpaths="$(
    otool -l "$binary_path" | awk '
      $1 == "cmd" { in_rpath = ($2 == "LC_RPATH"); next }
      in_rpath && $1 == "path" { print $2 }
    '
  )"

  if grep -Fxq "$FRAMEWORKS_RPATH" <<< "$existing_rpaths"; then
    echo "$binary_path already has an LC_RPATH for $FRAMEWORKS_RPATH, skipping"
  else
    echo "Adding $FRAMEWORKS_RPATH rpath to $binary_path to support mac frameworks (e.g. Sentry)"
    install_name_tool -add_rpath "$FRAMEWORKS_RPATH" "$binary_path"
  fi
done